Come experience the national parks! On five days in 2021, all National Park Service sites that charge an entrance fee will offer free admission to everyone. Mark your calendar for these entrance fee–free dates in 2021: ***PLEASE CHECK DIRECTLY WITH THE PARK BEFORE HEADING OUT!! Following guidance from the Centers for Disease Control and Prevention and state and local public health authorities, park operations continue to adapt to changing conditions while maintaining public access, particularly outdoor spaces. Though the park buildings you know and love may be closed, outdoor spaces remain a place to explore and have fun with the whole family.